Also known as corriculum, is the name of a "language" consisting of English written with the digits of a calculator. You type in a number and then turn the calculator upside down to see the word. In order to make use of all ten digits, I persuaded the Anglo-Saxon letter eth (ð) to return from retirement to stand in for 'TH'. For instance:
SHIBBOLETH (SHIBBOLEð) 937088145